Introduction.:
Pain is a subjective, negative and difficult to define unequivocally, the emotional and sensory impression that arises from the tissue damage factor. The pain could be acute or chronic. It could radiate to many different parts, such as the lower limbs, vertebrae, scapulae, neck or mandible. Chest pain is not always connected to the cardiovascular problem. It may be caused by disorders of the respiratory, nervous, musculoskeletal or alimentary system.

Aim:
The aim was the analysis of dealing with patients referring to the Hospital Emergency Room (ER) because of chest pain. Definition of demographic structure among the patients (in terms of age and gender), risk factors and assessment of prognosis depending on the diagnosis.

Material and methods:
The research method was to analyze the medical documentation on the hospital computer system database, according to the diagnosis and further proceeding among patients referred with chest pain. The study group included 692 patients hospitalized in the Hospital Emergency Room (ER) of Regional Adult Hospital in Bialystok, in the period from 1 - 31 May 2016 because of chest pain.

Results:
The studied population consisted of 446 women and 246 men, among whom 316 patients (45.66%) were discharged after the necessary medical treatment, 207 (29.9%) were referred to the cardiology department and 121 (17.49%) to the internal medicine department. The most common cause of chest pain was atrial fibrillation,and the rarest pulmonary embolism.

Conclusions:
Nearly half of the admitted patients were discharged for further ambulatory, outpatient treatment, others were referred for further hospitalization, mainly to the cardiology department. Most of that group was diagnosed with ventricular tachycardia, pulmonary embolism and heart attack. Among the studied population, the worst prognosis was for patients diagnosed with sudden cardiac arrest, pulmonary embolism and aortic aneurysm. .